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Celestial Album
UX Tau A's protoplanetary disk


UX Tau A's protoplanetary disk extends to a radius of 120 AU (1 AU = the distance between the Earth and the Sun) with a high spatial resolution of 0.1" (arcsecond)  Top: Near-infrared intensity image of UX Tau A. White is the brightest, and then red. The background is dark blue. The disk is slightly elongated in the north-south direction (top to bottom in the figure). Its west side (on the right) is a little brighter than its east side; this indicates that the inclination of the disk is in the east-west direction and that its west side is closer to the observer (see figure on the right). Bottom: Schematic diagram of the inclination of the protoplanetary disk of UX Tau A. Credit: NAOJ

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